Translating and cooling material.



M. SIMS.

TRANSLATlING AND COOLING MATERIAL.

APPLICATION FILED SEPT-4. I915.

Patented Apr. 15, 191$).

2 SHEETSSHEEI l.

I/Vl/EA/Tbl? M ATTORNEY M. SIMS.

TRANSLATING AND comma MATERIAL. APPLICATION FILED SEFT- 4. 1915.

1 ,3QQ74. Patented Apr. 15, 1919. L

2 SHEETSSHEET 2.

//v VE/V T01? M M4 BY M i A TTOR/VEY sans rarnrm are.

'3. t EAU SIlJi'IS, 0F LLANERCH, PENNSYLVANIA, ASSIGNOR T0 SIMS AUTOMATIC CONVEYER COMPANY INCORPORATED, A CORPORATION OF DELAWARE.

TSLA'IILNG- AND COOLING HATER.

Specification of Letters Patent. Patented Apr. I15, 19119.,

Application filed September 4, 1915. Serial No. 49,102.

To all whom it may concern:

Be it known that I, MIRABEAU SIMs, a citizen of the United States, residing at Llanerch, in the county of Delaware, State of Pennsylvania, have invented a new and useful Improvement in Translating and Cooling Material, of which the following is a specification.

My invention relates to improved method and means for translating and cooling material. The invention is especially applicable to the treatment of bone black used in connection with sugar refining. After this bone black has been used in the sugar. refining process it is recovered, dried in kilns, reduced to the required temperature for the refining process and returned to the refining apparatus. The method of withdrawing, drying, cooling and returning the bone black to the refining apparatus has been heretofore complicated and expensive. The object of the present invention is to provide simple and efiicient method and means for accomplishing this object.

Referring to the drawings which illustrate merely by way of example apparatus suitable for effecting this invention Figure 1 is a side elevation of such apparatus.

Fig. 2 is a transverse elevation ofsame.

Fig. 3 is a side elevation of a detail on an enlarged scale showing the hopper mounted on a section of conveyer pipe.

Fig. 4 is a plan view of same.

Fig. 5 is an end elevation.

Similar numerals refer to similar parts throughout the several views.

As is well known, bone black or animal charcoal is used in the refining process of makin granulated sugar, and after such use, it 1s recovered and transferred to driers or kilns for dryin the same. It comes out of the driers or kilns at a temperature approximately 400 F. The temperature of the material must be reduced to about 120 F. before it can be returned to the refining apparatus. In common practice the bone black is dropped from the kiln, at intervals, in a stream about three inches in diameter.

This stream runs for about six seconds and is interrupted for about twelve seconds. This intermittent operation continues during the entire twenty-four hours of the day. A number of kilns are operated at the same time.

- The purpose of this diagonal line of separation between the gateslO is to increase the distribution of the material over the screen 13. These gates are adjustable by means of the handles 12, for permitting the proper fiow of material past the same to the screen 13, which in the present example, is provided by the series of perforations 14 in that part of the'wall of the pipe 9 inclosed within the bottom margin of the hopper 8*;

the screen serving to intercept the particles of brick, broken ofi' from the kiln in the drying process, which are undesirable to be retained in the bone black. It will be understood that the sliding gates 10 areso adjusted as to permit asuficient feed to the conveyer pipe to take care of the intermittent feed from the kiln.

In the present example it has been found convenient to provide the conveyer pipe approximately fifteen inches in diameter, and extending approximately 150 feet horizontally and 113 feet vertically. This pipe is provided at the top with the return bend 16, having its downwardly rojecting discharging end'fiaring as at 1 and inclosed within the chamber 18. Chamber 18 is connected at its top by conductor 19 with the suction producing blower 20. The chamber 18 is adapted to discharge at the bottom to the chute 21, which delivers to the carrying belt 22, which transports and delivers the bone black back to the refining apparatus, not shown, at the required temperature. A suitable valve control for the discharge from 18 to 21 is indicated at 23.

The operation of the device is as follows The lower portions ofthe driers or kilns 7 are only shown diagrammatically, as their construction and operation are well known and need no description here. The bone black, after it has been used in the refining apparatus and has been withdrawn therefrom, is delivered by any suitable means to these kilns Where it is thoroughly dried. In the process of drying the material, its temperature as above stated, is raised to about 400 F. and before it can be returned back into the refining apparatus this temperature must be reduced to 120 F. As the material falls from the driers into the hoppers and especially a ainst the metallic walls thereof and the ad ustable gates therein, the first stage of cooling begins. A further cooling is effected by the material encountering the perforated Walls of the conducting pipe 9. A further cooling takes place as the material encounters the .inrushing air drawn upwardly from the intake end 24% to the chamber 18. A further cooling takes place as the material travels along this horizontal and conveyer pipe 9 and as it is discharged through the chute 21 onto belt 22 and as it is carried along the belt 22. The speed of travel of the material from the kilns 7 to the chamber 18 depends upon the velocity of the air current through the pipe 9 and also upon the specific gravity of the bone black. The air velocity of course can be regulated as for example, by means of the rheostat 25 controlling the speed of motor 26 which drives the blower 20. In this way the required length of time may be consumed in translating material from the kilns to the belt which may be required for the several factors herein mentioned to reduce the temperature of the material from that at which it is delivered from the kilns to that required when it is delivered to the refining apparatus.

What I claim is:

.Apparatus for operating upon bone black after its use in the refining of sugar, which comprises a drying kiln adapted to discharge its contents intermittently, a pneumatic conveyer pipe of sufficient extent to secure a substantial cooling of the material discharged it'rom the kiln, said conveyer pipe provided with a plurality of apertures through which the material is introduced thereto, means for converting the intermittent disoharge from the kiln to a substantially constant flow into the pipe, regulatable means for inducing a current of air through the pipe, a conveyer belt and means for discharging the material from the pipe to the belt, whereby the material is reduced in temperature from that of the kiln to the temperature required for reuse at the discharge end of the conveyer belt.

MRABEAU SIMS.

Witness:

HOFMANN. 

